A bicollateral vascular bundle is characterised by (a) phloem being sandwitched between xylem (b) transverse splitting of vascular bundle (c) longitudinal splitting of vascular bundle (d) xylem being sandwitched between phloem.
Option D A bicollateral vascular bundles is characterised by xylem being sandwiched between phloem. Here there are two cambuim rings e.g., Cucurbita.
